/*
 * @Author: qin
 * @Date:   2018-08-28
 * +----------------------------------------------------------------------
 * | admin [ 后台管理系统公共配置信息 ]
 * | 判断是否ie浏览器
 * +----------------------------------------------------------------------
 */
layui.define([], function (exports) {
    var ieTest = {
        check: function (e) {
            var userAgent = navigator.userAgent; //取得浏览器的userAgent字符串
            var isIE = userAgent.indexOf('compatible') > -1 && userAgent.indexOf('MSIE') > -1; //判断是否IE<11浏览器
            var isEdge = userAgent.indexOf('Edge') > -1 && !isIE; //判断是否IE的Edge浏览器
            var isIE11 = userAgent.indexOf('Trident') > -1 && userAgent.indexOf('rv:11.0') > -1;
            if(isIE) {
                var reIE = new RegExp('MSIE (\\d+\\.\\d+);');
                reIE.test(userAgent);
                var fIEVersion = parseFloat(RegExp['$1']);
                if(fIEVersion === 7) {
                    return 7;
                } else if(fIEVersion === 8) {
                    return 8;
                } else if(fIEVersion === 9) {
                    return 9;
                } else if(fIEVersion === 10) {
                    return 10;
                } else {
                    return 6;//IE版本<=7
                }
            } else if(isEdge) {
                return 'edge';//edge
            } else if(isIE11) {
                return 11; //IE11
            }else{
                return -1;//不是ie浏览器
            }
        }
    };
    exports('ieTest', ieTest);
});